Question

A number x is even if x = 2n for some whole number n. A number x is odd if x = 2n+1 for some whole number n. (questions 1 - 3 from attached picture)

Answer 1

1. even1 + even2 = 2a + 2b = 2(a+b)

a+b is something from hint

2. odd1 + odd2 = 2a+1 + 2b+1

= 2(a+b) + 2 = 2(a+b+1)

a+b+1 is something from hint

3. odd + even = 2a+1 + 2b

= 2(a+b) + 1

a+b is something from hint